CN209944980U

CN209944980U - Air inlet device for oven

Info

Publication number: CN209944980U
Application number: CN201920476541.XU
Authority: CN
Inventors: 谭述华
Original assignee: NINGBO HAIYUE ELECTRICAL APPLIANCE MANUFACTURING Co Ltd
Current assignee: NINGBO HAIYUE ELECTRICAL APPLIANCE MANUFACTURING Co Ltd
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-01-14
Anticipated expiration: 2029-04-10

Abstract

The utility model provides an air inlet device for a drying oven, which comprises a box body, an air inlet valve, a cooling fan and a valve block; the box body is provided with a ventilation cavity, a first air channel and a second air channel, the first air channel and the second air channel are respectively communicated with the ventilation cavity, the ventilation cavity is communicated with an air inlet of an external oven, the first air channel is provided with the air inlet valve, and the second air channel is provided with the cooling fan; the ventilation cavity is internally provided with the valve plate for controlling the air inlet amount of the second air duct, and the box body is also provided with an air valve actuator for controlling the opening and closing of the valve plate. The utility model provides a pair of an air inlet unit for oven has overcome current oven cooling rate slow, each part cools off inhomogeneous defect.

Description

Air inlet device for oven

Technical Field

The utility model relates to a valve field especially relates to an air inlet unit for oven.

Background

With the development of science and technology, the use of ovens is more and more common. The oven is a device which can heat the electric heating tube to generate a heat source through a power supply, and when the heat source is absorbed by a heated object, the heat source can be directly converted into heat energy so as to obtain a quick drying effect; the oven has many advantages, can shorten production cycle, the energy saving, improve product quality etc..

The oven is provided with an air inlet valve, the existing air inlet valve is of a natural air suction type, and the size of air inflow is manually adjusted; when the oven is cooled, because the air inlet valve for naturally sucking air is adopted, the cold air flow rate is low, and the cooling speed of the oven is low, so that the production period of the product is prolonged, the production rate is reduced, and the production requirement of an enterprise is difficult to meet; and moreover, the natural air suction type air inlet valve is adopted, so that all parts of the oven are cooled unevenly, and the product quality is reduced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to solve the problem that an air inlet unit for oven is provided to overcome current oven cooling rate slow, each part cools off inhomogeneous defect.

(II) technical scheme

In order to solve the technical problem, the utility model provides an air inlet device for a drying oven, which comprises a box body, an air inlet valve, a cooling fan and a valve block; the box body is provided with a ventilation cavity, a first air channel and a second air channel, the first air channel and the second air channel are respectively communicated with the ventilation cavity, the ventilation cavity is communicated with an air inlet of an external oven, the first air channel is provided with the air inlet valve, and the second air channel is provided with the cooling fan; the ventilation cavity is internally provided with the valve plate for controlling the air inlet amount of the second air duct, and the box body is also provided with an air valve actuator for controlling the opening and closing of the valve plate.

Further, the box body comprises an upper end face, a front end face and a right end face; the upper end face is provided with the first air duct, the front end face is provided with the air valve actuator, and the right end face is provided with the second air duct; the valve plate is fixed on a valve plate shaft, and the valve plate shaft is connected with the air valve actuator.

Furthermore, the cross-sectional shapes of the ventilation cavity and the second air duct are circular or rectangular, and the cross-sectional area of the valve plate is larger than that of the second air duct.

Further, a mounting seat is fixedly connected to the box body and fixed to a shell of the oven; and an air outlet is formed in the mounting seat and is communicated with the air inlet of the oven and the ventilation cavity respectively.

Furthermore, the second air duct is provided with a rubber ring on one side close to the valve plate.

Furthermore, the box body is formed by splicing steel plates.

Further, bearings are installed at two ends of the valve sheet shaft, and the valve sheet shaft is rotatably installed on the box body through the bearings.

Further, the fan of the cooling fan is an axial flow fan.

Furthermore, a protective cover which covers the cooling fan is arranged on the box body, and a filter screen is arranged at the position of the protective cover opposite to the fan.

(III) advantageous effects

The air inlet device for the oven provided by the utility model has simple structure and convenient installation; by adopting the device, forced air intake and natural air intake can be switched; when the oven is cooled, the state of automatic forced air inlet is switched to through the air valve actuator, and meanwhile, the forced cooling fan is started to accelerate the air flow, so that the cooling speed of the oven is greatly improved; a cooling fan is additionally arranged and matched with a blast system of the oven, so that all parts in the oven can be uniformly cooled; the valve plate shaft is driven by the air valve actuator, so that the opening degree of the valve plate can be controlled, and the cooling speed can be adjusted; the defects of low cooling speed and uneven cooling of all parts of the conventional oven are overcome.

Drawings

Fig. 1 is a perspective view of an air inlet device for an oven according to the present invention;

fig. 2 is an exploded view of an air inlet device for an oven according to the present invention;

fig. 3 is a sectional view of an air inlet device for an oven according to the present invention;

fig. 4 is a perspective view of the air inlet device box body for the oven of the present invention;

the corresponding part names for the various reference numbers in the figures are: 1. a box body; 2. an intake valve; 3. a cooling fan; 4. a valve plate; 5. an air valve actuator; 6. a valve plate shaft; 7. a mounting seat; 8. a rubber ring; 9. a protective cover; 10. a filter screen; 101. a ventilation cavity; 102. a first air duct; 103. a second air duct; 104. an upper end surface; 105. a front end face; 106. a right end face; 701. an air outlet; 702. and (4) protruding.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 4, the present invention provides an air inlet device for an oven, which includes a box body 1, an air inlet valve 2, a cooling fan 3 and a valve plate 4; the box body 1 is formed by splicing steel plates, a ventilation cavity 101, a first air channel 102 and a second air channel 103 which are communicated with the ventilation cavity 101 respectively are arranged on the box body 1, and the ventilation cavity 101 is communicated with an air inlet of an external oven. Referring to fig. 2 and 4, the box body 1 includes an upper end surface 104, a front end surface 105, and a right end surface 106; the upper end face 104 is provided with a first air duct 102, the first air duct 102 is provided with an air inlet valve 2, the diameter of the air inlet valve 2 is 120 mm, and the air inlet valve 2 can be directly purchased from the market; a valve plate 4 for controlling the air inlet amount of the second air duct 103 is arranged in the ventilation cavity 101, an air valve actuator 5 for controlling the opening and closing of the valve plate 4 is arranged on the front end surface 105, the valve plate 4 is in threaded connection with a valve plate shaft 6, and the valve plate shaft 6 is connected with the air valve actuator 5; the air valve actuator 5 is specifically an analog quantity air valve actuator, and can adjust the opening of the valve plate 4 and control the forced air inflow; the damper actuator 5 is DC24V, available directly from the market; the right end surface 106 is provided with a second air duct 103; the second air duct 103 is provided with a cooling fan 3; the cooling fan 3 adopts DC24V, and the fan of the cooling fan 3 is an axial flow fan.

The air inlet of the existing oven is directly provided with the air inlet valve 2, and the air inlet valve 2 is a natural air suction type air inlet valve, so that the cold air flow rate is low, the cooling speed of the oven is low, and the use is not facilitated. By adopting the device, the forced air inlet and the natural air suction can be mutually converted through the matching of the air valve actuator 5 and the cooling fan 3, so that the cooling speed is greatly improved; add cooling blower 3, the cooling blower 3 can be to the quick even cooling in each position with the blower system cooperation of oven.

Referring to fig. 3 and 4, in order to ensure the reliability of the structure, the cross-sectional shapes of the ventilation cavity 101 and the second air duct 103 are circular or rectangular, and the cross-sectional area of the valve plate 4 is larger than that of the second air duct 103; in this embodiment, the cross-sectional shape of the ventilation cavity 101 is rectangular, the cross-sectional shapes of the first air duct 101 and the second air duct 103 are both circular, the cross-section of the valve plate 4 is rectangular, and the cross-sectional area of the valve plate 4 is larger than that of the second air duct 103; the valve plate 4 may also be circular, and the valve plate 4 is to be able to completely close the second air duct 103.

Referring to fig. 2 and 3, in order to facilitate installation, a mounting seat 7 is fixedly connected to the box body 1, and the mounting seat 7 is fixed on a shell of the oven through eight bolts; an air outlet 701 is formed in the mounting seat 7, and the air outlet 701 is communicated with an air inlet of the oven and the ventilation cavity 101 respectively; the air outlet 701 is provided with the arch 702 all around, and in the arch 702 stretched into the ventilation chamber 101, the arch 702 outer wall hugged closely the ventilation chamber 101 inner wall, is favorable to guaranteeing the gas tightness of device.

Referring to fig. 3, in order to avoid collision and ensure good sealing, the second air duct 103 is provided with a rubber ring 8 on a side close to the valve sheet 4. The rubber ring 8 has a certain buffering effect, and when the valve plate 4 is closed, the valve plate can be prevented from colliding with the box body 1, so that noise is reduced, and the service life of parts is prolonged; when the valve plate 4 is closed, the rubber ring 8 can be tightly attached to the valve plate 4, and good sealing performance is guaranteed.

In order to reduce friction, bearings are arranged at two ends of the valve sheet shaft 6, and the valve sheet shaft 6 is rotatably arranged on the box body 1 through the bearings.

Referring to fig. 1 to 3, in order to prevent a safety accident, a protective cover 9 covering the cooling fan 3 is installed on the case 1, and a filter screen 10 is disposed at a position facing the fan on the protective cover 9.

In a normal working state, when the oven is heated and kept warm, the air valve actuator 5 drives the valve sheet shaft 6 to rotate, the valve sheet 4 closes the second air channel 103, air enters the oven from the air inlet valve 2, the air inlet valve 2 is of a natural air suction type, and the air inlet valve 2 can be manually adjusted to control the air inflow; when the oven is cooled, the state of automatic forced air inlet is switched to through the air valve actuator 5, the air valve actuator 5 drives the valve sheet shaft 6 to rotate, the valve sheet 4 opens the second air channel 103, and meanwhile, the cooling fan 3 is started to blow air into the box body 1, so that the air flow is accelerated; the original cooling speed is about 5 ℃ per minute, and after the device is adopted, the existing cooling speed is about 10 ℃ per minute, so that the cooling speed is greatly improved; the blast gate executor 5 can adjust the angle that opens and shuts of valve block 4, and then adjustable cooling speed, and application range is wider, and the flexibility is higher.

The air inlet device for the oven provided by the embodiment has the advantages of simple structure and convenience in installation; by adopting the device, forced air intake and natural air intake can be switched; when the oven is cooled, the state of automatic forced air inlet is switched to through the air valve actuator, and meanwhile, the forced cooling fan is started to accelerate the air flow, so that the cooling speed of the oven is greatly improved; a cooling fan is additionally arranged and matched with a blast system of the oven, so that all parts in the oven can be uniformly cooled; the valve plate shaft is driven by the air valve actuator, so that the opening degree of the valve plate can be controlled, and the cooling speed can be adjusted; the defects of low cooling speed and uneven cooling of all parts of the conventional oven are overcome.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An air inlet device for an oven, characterized in that: comprises a box body (1), an air inlet valve (2), a cooling fan (3) and a valve plate (4); a ventilation cavity (101) and a first air channel (102) and a second air channel (103) which are respectively communicated with the ventilation cavity (101) are arranged on the box body (1), the ventilation cavity (101) is communicated with an air inlet of an external oven, the first air channel (102) is provided with the air inlet valve (2), and the second air channel (103) is provided with the cooling fan (3); install in ventilation chamber (101) and be used for controlling second wind channel (103) intake valve block (4), still install on box (1) and be used for controlling blast gate executor (5) that valve block (4) opened and shut.

2. Air inlet device for ovens according to claim 1, characterized in that: the box body (1) comprises an upper end surface (104), a front end surface (105) and a right end surface (106); the upper end face (104) is provided with the first air duct (102), the front end face (105) is provided with the air valve actuator (5), and the right end face (106) is provided with the second air duct (103); the valve plate (4) is fixed on a valve plate shaft (6), and the valve plate shaft (6) is connected with the air valve actuator (5).

3. Air inlet device for ovens according to claim 2, characterized in that: the cross-sectional shapes of the ventilation cavity (101) and the second air duct (103) are circular or rectangular, and the cross-sectional area of the valve plate (4) is larger than that of the second air duct (103).

4. Air inlet device for ovens according to claim 1, characterized in that: the box body (1) is fixedly connected with a mounting seat (7), and the mounting seat (7) is fixed on the shell of the oven; an air outlet (701) is formed in the mounting seat (7), and the air outlet (701) is communicated with an air inlet of the oven and the ventilation cavity (101) respectively.

5. Air inlet device for ovens according to claim 4, characterized in that: and a rubber ring (8) is arranged on one side, close to the valve plate (4), of the second air duct (103).

6. Air inlet device for ovens according to claim 1, characterized in that: the box body (1) is formed by splicing steel plates.

7. Air inlet device for ovens according to claim 2, characterized in that: the bearing is installed at two ends of the valve sheet shaft (6), and the valve sheet shaft (6) is rotatably installed on the box body (1) through the bearing.

8. Air inlet device for ovens according to claim 1, characterized in that: and the fan of the cooling fan (3) is an axial flow fan.

9. Air inlet device for ovens according to claim 1, characterized in that: the box body (1) is provided with a protective cover (9) which covers the cooling fan (3), and the protective cover (9) is provided with a filter screen (10) at the position right facing the fan.